What is the value of log↓3 81? 2, 3, 4 or 5?​

Question

What is the value of log↓3 81? 2, 3, 4 or 5?​

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RobertKer 6 months 2021-08-09T17:14:48+00:00 2 Answers 3 views 0

Answers ( )

    0
    2021-08-09T17:15:59+00:00

    Answer:

    4

    Step-by-step explanation:

    Define \log_a b=c\implies a^c=b.

    Let

    \log_3 81=x.

    Using our definition \log_a b=c\implies a^c=b, we have:

    3^x=81

    Solving for x:

    x=\boxed{4}\text{ from simply knowing that }3^4=81

    Or

    Algebraically solve step-by-step by taking the log of both sides:

    \log 3^x=\log 81

    Using log property \log a^b=b\log a, rewrite:

    x\log 3=\log81

    Divide both sides by log(3):

    x=\frac{\log 81}{\log 3}=\boxed{4}

    0
    2021-08-09T17:16:01+00:00

    Answer:The value of log base 3 log base 2 log base √3 81 is -a)1 b) 2 c)3 d) 0

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )